Multiple-tool holder



S. M. O'SULLIVAN.

MULTIPLE TOOL HOLDER. APPLICATION FILED MAYI. 1918.

1,316,920. Patented Sept. 23, 1919. .9

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1a ,1 ,yzmzwmmzzzzm ZJWWL'YW ATTORNEYS SYLVESTER M. OSULLIVAN, OF SAN FRANCISCO, CALIFORNIA.

MULTIPLE-TOOL HOLDER.

Specification of Letters Patent.

Patented Sept. 23, 1919.

Application filed May 1, 1918. Serial No. 231,822..

To all whom c't may concern Be it known that I, SYLVESTER M. OSU'L- LIVAN, a citizen oi" the United States, residing at the city and county of San Francisco and State of California, have invented new and useful Improvements in Multiple-Tool Holders, of which the following is a specification.

This invention relates to a multiple tool holder, and particularly to a holder for the reception and support of pneumatically operated drills.

One of the objects of the present invention is to provide an adjustable holder for ai-r operated drills, such as are employed in connection with shipbuilding, structural iron work, and the like, for the purpose of drilling, countersinking, etc, which is adapted to receive and support two or more drills, thus making it possible to at least double the working capacity of each operator, as two or more holes may be drilled simultaneously where it was formerly common practice to drill one.

Another object of the invention is .to provide means for adjusting the position of the drills, when inserted in the holder, so that practically any spacing desired may be obtained between the holes when drilling.

Further objects will hereinafter appear.

The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a plan view of the holder, showing a pair of air-operated drills mounted therein.

Fig. 2 is a side elevation of Fig. 1.

Fig. .3 is an end view of one of the drill clamps.

Referring to the drawings in detail, A indicates, in general, a multiple tool holder, which is shown as supporting a pair of pneumatic drills 2 and 8. The holder proper comprises a pair of clamps l and 5 which are U-shaped in plan view to inclose the sides of the housing of the respective drills. Each clamp comprises a rounded portion 6 and a pair of side arms 77. These arms are cut out on the sides, as at 8, to reduce the weight to a minimum, and each outside arm is provided with an upwardly extending bearing bracket 9 for the reception of a handhold rod 10.

Each side arm 7 is also provided with a pair .of upper and lower lugs 11 and 12, respectively, for the reception of an upper and a lower pair of longitudinally extending bars 13 and 14.. Both sets of bars are slotted longitudinally, as at 1.5, and they are tied together by means of cross bars 16.

In operation, when it is desired to mount two or more drills in the holder, it is first necessary to place each drill housing in a U-shaped bracket. These are then placed on top of the bars l-i and are secured thereto by means of nuts 17 and 18. The drill 2 is placed in position and the drill 3 may then .be inserted. This is also secured to the bars 13 and l t by nuts, such as shown at 17 and 18, and any spacing between the drills may be obtained :by sliding the U- shaped bracket inclosing the drill housing 3 longitudinally or away from the drill 2; the slots 15 permitting a considerable range of adjustment or spacing between the respective drills. The moment the desired spacing is obtained, it is only necessary to t1ghten up the bolts 17 and 18 and to finally secure the drill housing in place by applying a central bolt 19 which passes thuough the cross bars 16.

The holder having the drills secured therein may now be grasped by the handbar 10 and placed in any position desired or carried about from place to place. The air to operate each drill is admitted through the hose connections 20 and chucks for the reception of any sized drill desired are shown :at 21. Each drill is also provided with a feed screw 22 which may engage any rigid support, such as a dead rest or the like, when the drills are operating, thus making it unnecessary for the operator to support the entire weight of the drill while he is operating same. Any suitable form of drill may, of course, be employed, but the present illustration shows a standard form of Little giant corner drill.

While two drills are here shown as mounted in the holder, it is obvious that three, or even more, may be placed and secured in the same. I also wish it understood that .the materials and finish of the several parts of the device may be such as the experience and judgment of the manufacturer may dictate.

The advantage of employing a holder of the character described should be obvious as it permits one worker to accomplish at least double the amount of work and in many instances triple the amount of work than is possible where each tool or drill must be handled separately. The holder, furthermore, provides a convenient carrier which renders it more adaptable, when carried about and handled, thus further increasing the efliciency of the worker and the ease with which it can be placed in position and operated.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In a multiple tool holder, tool clamps, upper and lower sets of connecting bars for the clamps, means to secure one of the tool clamps to one end of both the upper and lower connecting bars at fixed points on the latter, means to adjustably secure the other tool clamp to the connecting bars, and adj ustable means movable with the last named securing means and located between the opposite ends of the upper and lower con-. necting bars and the adjustable tool clamp totie the upper and lower connecting bars together, said tying means including crossbars extending transversely of the connecting bars, and a bolt secured at its ends to the respective cross-bars.

2. A multiple tool holder, comprising an upper and a lower set of'interspaced, parallel bars, clamping members adapted to be secured between said bars, a tool mounted ineach clamping member, means for rigidly securing one of the clamps and the tool carried thereby between the bars, means permitting longitudinal movement of the other clamping member between the bars to increase or decrease the spacing between the tools, and means for securing said adjustable clamp at any point desired along the bars.

3. A tool holder comprising an upper and a lower'pair of interspaced, parallel bars, all of said bars being slotted the major portion of their lengths, a U-shaped clamp adapted to be rigidly secured between the bars and also adapted to hold the bars spaced from each other vertically and horizontally, said clamp when secured between the bars adapted to receive and secure the housing of a drill, a second U-shaped clamp adapted to be placed between the bars, bolts passing through flanges on the clamp and the slotted portions of the bars to secure the clamp between the bars and to permit adjustment of the same, said clamp also adapted to secure Copies of this patent may be obtained for and support the housing of a drill, and a pair of cross bars adapted to be secured to the slotted bars exteriorly of the adjustable U-clamp to positively lock said U-clamp against longitudinal movement.

A. A tool holder comprising an upper and a lower pair of interspaced, parallel bars, all of said bars being slotted the major portion of their lengths, a U-shaped clamp adapted to be rigidly secured between the bars and also adapted to hold the bars spaced from each other vertically and horizontally, said clamp when secured between the bars adapted to receive and secure the housing of a drill, a second U-shaped clamp adapted to be placed between the bars, bolts passing through flanges on the clamp and the slotted portionsof the bars to secure the clamp between the bars and to permit adjustment of the same, said clamp also adapted to secure and support the housing of a drill, a pair of cross bars adaptedto be secured to the slotted bars exteriorly of the adjustable U-clamp to positively lock said U-clamp against longitudinal movement, a pair of bearing lugs, one on each U-clamp, and a handhold bar extending through said bearing lugs and secured therein.

' 5. A multiple tool holder comprising an upper and lower set of interspaced parallel bars, a pair of U-shaped clamping members adapted to be secured between said bars, a pneumatic drill mounted in each clamping member, means on each clamping member for securing the drill therein, and means permitting the longitudinal movement of the clamping members to increase or decrease the spacing between the drills.

6. In a multiple tool holder, tool clamping means, a bearing bracket extending outwardly from each of the tool clamping means, a handle extending longitudinally of the device and slidable through each of the five cents each, by addressing the Commissioner of Patents, Washington, I). G. 

